Born in Osmaniye in 1972, Çokan completed primary and secondary education in Osmaniye and graduated from the Faculty of Law at Ankara University (1991-1995). In 1996 Çokan completed the legal traineeship at the Ankara Bar Association and, after registering with the Ankara Bar, began practising as a lawyer. In the same year Çokan sat the judicial examination and, having passed, trained as a candidate judge in Ankara between 1997 and 1999. On completing judicial training, Çokan was appointed as a judge. In 2001 Çokan left the judiciary voluntarily, settled in Kocaeli and began practising as an independent lawyer registered with the Kocaeli Bar Association. Çokan still practises as an independent lawyer in Kocaeli and is one of the founders of the Law and Change Association and the Informatics and Technology Foundation.